Merge branch 'release/0.14.1-1' into develop
Support command of from detach to attach
Fix bugs of resume/suspend
Support re-launch after all manager nodes shutdown
Implement deletion of gateway-node
Upgrade leo_redundant_manager to 0.12.20
Format code
modified rpc timeout from infinity to 30sec
add feature to backup/restore mnesia datas
fix error handling correctly
add feature enabling leo_manager to take over
Format codes
Upgrade libs
Optimize codes
Output manager-maintenance's help
Switch redundant-manager from tag to develop-branch
Support rack-awareness replica placement
Refactor
Fix a node registration bug
Revise help